immutability

the state of continuing without change the immutability of the laws of physics is a myth, since refinements of those laws continue to be made Synonyms changelessness, fixedness, constancy, immutableness, invariability, stability, steadiness, unchangeablenessRelated Words consistency, regularity, sameness, uniformity; durability, enduringness, lastingness, permanenceNear Antonyms aperiodicity, inconsistence, inconsistency, irregularity, unevenness; caducity, evanescence, impermanenceAntonyms capriciousness, changeability, changeableness, fickleness, instability, mutability, unpredictability, unsteadiness, variability, variableness, volatileness, volatility